#include <iostream>
#include <fstream>

using namespace std;

int main()
{
    ifstream read("bac.txt");

    int n=0, a;
    while (!read.eof())
    {
        read>>a;
        n++;
    }
    read.clear();
    read.seekg(0, read.beg);
    int edd[n];
    for (int w1=0; w1<=n; w1++)
    {
        edd[w1]=1;
    }

    int num, elozo;
    read>>a;
    num=a;
    int s;
    for(s=1; !read.eof(), s<=n; elozo=a)
    {
        read>>a;
        if (a==elozo)
        {
            edd[s]++;
        }
        else
        {
            s++;
        }
        if (edd[s]>edd[s-1])
        {
            num=a;
        }
    }
    int maxim=0;
    for (int h=0; h<=s; h++)
    {
        if (edd[h]>maxim)
        {
            maxim=edd[h];
        }
    }
    cout << maxim << endl;
    for (int k=1; k<=maxim; k++)
    {
        cout<< num <<" ";
    }
}